SOLUTION: ABC is an isosceles triangle. Its two sides AB and AC are equal to one another. It�s BAC = 20 degree. The baseline BC is extended upto D. Of how many degrees is the angle ACD?

Question 1065081: ABC is an isosceles triangle. Its two sides AB and AC are equal to one another. It�s BAC = 20 degree. The baseline BC is extended upto D. Of how many degrees is the angle ACD?
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
.

ACD is the exterior angle.

It is supplementary angle to the angle ACB.

Angle ACB is  = 80 degrees.

Hence, angle ACD is 180-80 = 100 degrees.

Solved.

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